Improve support for the barcode-on-screen use case for wearables. DO NOT MERGE
(cherry-picked from lmp-sprout-dev)

Add two small developer apis to wearable extender to help developers
show barcodes on different shaped wearable screens.

Bug: 16299175
Bug: 17005635
Change-Id: I5da006453528ec63484c01240330338d19a280bd
1 file changed